Hi
Thanks for your inquiry. You can remove content of bookmark using the following simple code:
doc.Range.Bookmarks["book"].Text = string.Empty;
Also your can try remove parent paragraph of bookmark.
doc.Range.Bookmarks["book"].Text = string.Empty;
doc.Range.Bookmarks["book"].BookmarkStart.ParentNode.Remove();
Hope this helps.
Also note that only you and Aspose staff members can download documents attached in this forum.
Best regards.
Alexey Noskov
Developer/Technical Support
Aspose Auckland Team